First commit of partial RosettaCode contents.

Pushing this for testing purposes. Lots of work still needed.

Task/Infinity/Ruby/infinity.rb

@@ -0,0 +1,10 @@
+a = 1.0/0       # => Infinity
+a.finite?       # => false
+a.infinite?     # => 1
+
+a = -1/0.0      # => -Infinity
+a.infinite?     # => -1
+
+a = Float::MAX  # => 1.79769313486232e+308
+a.finite?       # => true
+a.infinite?     # => nil